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MINERALOGY

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Mineral: FERROFERRITSCHERMAKITE
Name: Ferro-ferri-tschermakite
Formula: ▢{Ca2}{Fe2+3Fe3+2}(Al2Si6O22)(OH)2
Crystal System: Monoclinic
Group: Amphibole supergroup, with (OH,F,Cl) dominant. Ca subgroup. Tschermakite group
References: AM 97 (2012), 2031; CM 35 (1997), 219
Comments: ▢ = vacancy

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